
#include "UdpClient.hpp"
#include <sys/types.h>
#include <sys/socket.h>
#include <iostream>
#include <cstdlib>
#include <string>
#include <cstring>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "Common.hpp"
using namespace std;

//./client_udp
int main(int argc, char *argv[])
{
   if (argc != 3)
   {
      cerr << "Usage:" << argv[0] << "serverIp serverPort" << endl;
      Die(USAGE_ERR);
   }
   string serverip = argv[1];
   uint16_t serverport = stoi(argv[2]); // 转成整数
   // 1.创建套接字
   int sockfd = ::socket(AF_INET, SOCK_DGRAM, 0);
   if (sockfd < 0)
   {
      cerr << "socket error" << endl;
      Die(SOCKET_ERR);
   }
   // 1.1 填充serve信息
   struct sockaddr_in server;
   memset(&server, 0, sizeof(server));
   server.sin_family = AF_INET;
   server.sin_port = htons(serverport);
   server.sin_addr.s_addr = ::inet_addr(serverip.c_str());

   // client dong 不断向服务器发消息
   while (true)
   {
      cout << "Please enter..." << endl;
      string message;
      getline(cin, message);

      // 发给服务器需要知道服务器是谁 那就需要服务器的套接字信息
      int n = ::sendto(sockfd, message.c_str(), message.size(), 0, CONV(&server), sizeof(server));
      // 读取服务端相关消息
      struct sockaddr_in temp;
      socklen_t len = sizeof(temp);
      char buffer[1024];
      n = ::recvfrom(sockfd, buffer, sizeof(buffer) - 1, 0, CONV(&temp), &len);
      if (n > 0)
      {
         buffer[n] = 0;
         cout << buffer << endl;
      }
   }
   return 0;
}